linux-kernel - Re: [PATCH] media: venus: pm_helpers: add fallback for the opp-table

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <k6umaq7xrfma44vm75ea6m7vqd3hn367xdymsjylp3zcqn5vmd@jbvgdknnc7ri>
Date: Wed, 23 Jul 2025 16:01:44 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Renjiang Han <quic_renjiang@...cinc.com>
Cc: quic_qiweil@...cinc.com, quic_wangaow@...cinc.com,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Dikshita Agarwal <quic_dikshita@...cinc.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: venus: pm_helpers: add fallback for the opp-table

On Wed, Jul 23, 2025 at 06:26:02PM +0530, Renjiang Han wrote:
> Since the device trees for both HFI_VERSION_1XX and HFI_VERSION_3XX
> do not include an opp-table and have not configured opp-pmdomain, they
> still need to use the frequencies defined in the driver's freq_tbl.
> 
> Both core_power_v1 and core_power_v4 functions require core_clks_enable
> function during POWER_ON. Therefore, in the core_clks_enable function,
> if calling dev_pm_opp_find_freq_ceil to obtain the frequency fails,
> it needs to fall back to the freq_tbl to retrieve the frequency.
> 
> Signed-off-by: Renjiang Han <quic_renjiang@...cinc.com>
> ---
> Since device trees for both HFI_VERSION_1XX and HFI_VERSION_3XX do not
> contain an opp-table and have not configured opp-pmdomain, they still
> need to use the frequencies defined in the driver's freq_tbl.
> 
> Therefore, if calling dev_pm_opp_find_freq_ceil to obtain the frequency
> fails in the core_clks_enable, it needs to fall back to the freq_tbl to
> retrieve the frequency.
> 
> Validated this series on QCS615 and msm8916.
> ---
>  drivers/media/platform/qcom/venus/pm_helpers.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)

Fixes: b179234b5e59 ("media: venus: pm_helpers: use opp-table for the frequency")

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>

-- 
With best wishes
Dmitry